| 采动区地表动态沉降预测的Richards模型 |
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| 引用本文： | 王正帅,邓喀中.采动区地表动态沉降预测的Richards模型[J].岩土力学,2011,32(6):1664-1668. |
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| 作者姓名： | 王正帅 邓喀中 |
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| 作者单位： | 1. 中国矿业大学环境与测绘学院,江苏徐州,221116;中国矿业大学江苏省资源环境信息工程重点实验室,江苏徐州,221116
2. 中国矿业大学环境与测绘学院,江苏徐州,221116 |
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| 基金项目： | 国家自然科学基金项目资助，"十一五"国家科技支撑计划重点项目资助 |
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| 摘 要： | 针对Knothe时间函数在采动区地表动态沉降预测中存在着较大偏差的问题,提出了地表动态沉降预测的Richards模型。基于开采过程中的地表沉降变形规律,给出了能够反映地表沉降全过程的理想时间函数模型所具有的基本特征,引入Richards生长曲线模型,分析了模型参数与地质采矿条件之间的定性、定量关系,并探讨了模型的适用范围,指出地表发生连续的、渐变的沉降变形时,模型预测效果较好。实例分析表明,Richards模型符合理想时间函数模型的要求,可较好地模拟采动区地表动态沉降过程,能够计算出地表移动持续时间和地表点在某一时刻的下沉值、下沉速度、加速度等动态参数,且模型的可塑性较强,具有较广泛的适用性。
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| 关 键 词： | 沉降预测 Richards模型 采动区 开采沉陷 |
| 收稿时间： | 2010-07-04 |
Richards model of surface dynamic subsidence prediction in mining area |
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| WANG Zheng-shuai,DENG Ka-zhong.Richards model of surface dynamic subsidence prediction in mining area[J].Rock and Soil Mechanics,2011,32(6):1664-1668. |
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| Authors: | WANG Zheng-shuai DENG Ka-zhong |
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| Institution: | 1. School of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China; 2. Key Laboratory of Resource and Environment Information Engineering of Jiangsu Province, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China |
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| Abstract: | Aiming at the poor results of Knothe time function in predicting surface dynamic subsidence,Richards model is proposed.Based on analyzing the characteristics of the surface subsidence induced by coal mining,the elementary features of the perfect time function which could describe the full subsidence process are presented;and then,Richards growth model is introduced and established before the qualitative and quantitative relationships between parameters of model and geologic and mining conditions are given.F... |
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| Keywords: | subsidence prediction Richards model mining area mining subsidence |
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